An object is to provide an administration device capable of discharging a prescribed, equal amount of medicine a number of times by spraying. Provided is a spraying device including: a barrel allowing attachment of a spray nozzle at a tip end a gasket provided slidably movable in liquid-tight manner in said barrel a rod coupled to a base end of the gasket and having a guide groove and a regulating member provided on the barrel, having a projection that can slidably fit with the guide groove wherein the guide groove includes at least a first administering groove and a second administering groove provided continuous from the first administering groove the second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of the first administering portion, and a second administering portion extending from the transitional portion to a base end along the longitudinal direction and an energizing protrusion engageable with the projection is provided at a boundary between the transitional portion and the second administering portion.
